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Finding the Fourth Proportional to 518,271.08, 715,222.06 and 288,822.12

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Solution

The fourth proportional to 518,271.08, 715,222.06 and 288,822.12 is: 398,578.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,271.08 : 715,222.06 = 288,822.12 : x
  2. Step 2: Convert to fraction form
    518,271.08/715,222.06 = 288,822.12/x
  3. Step 3: Cross multiply
    518,271.08x = 715,222.06 × 288,822.12
  4. Step 4: Simplify right side
    518,271.08x = 206,571,951,639.97
  5. Step 5: Solve for x
    x = 206,571,951,639.97/518,271.08
  6. Step 6: Final answer
    x = 398,578.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.